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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
I am trying to write a program where the names of some functions are dependent on the value of a certain macro variable with a macro like this:
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Timer function to provide time in nano seconds using C++
I wish to calculate the time it took for an API to return a value.
The time taken for such an action is in the space of nano seconds. As the API is a C++ class/function, I am using the timer.h to caculate the same:
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Determine what attributes were changed in Rails after_save callback?
...f (self.published_changed? && self.published == true)
end
end
It just works.
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How to search a specific value in all tables (PostgreSQL)?
Is it possible to search every column of every table for a particular value in PostgreSQL?
8 Answers
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A dependent property in a ReferentialConstraint is mapped to a store-generated column
I get this error when writing to the database:
13 Answers
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How to write to a file, using the logging Python module?
How can I use the logging module in Python to write to a file? Every time I try to use it, it just prints out the message.
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When to add what indexes in a table in Rails
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Should I add "index" to all the foreign keys like "xxx_id"?
It would be better, because it accelerates the search in sorting in this column. And Foreign keys are something searched for a lot.
Since Version 5 of rails the index will be created automatically, for more information see h...
CreateProcess error=206, The filename or extension is too long when running main() method
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edited Aug 10 at 20:07
Felix Favour Chinemerem
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Which Visual C++ file types should be committed to version control?
Which Visual Studio \ Visual C++ file types should be committed to version control?
In my project I have the following file types:
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How to convert string to boolean php
...se of that value.
$test_mode_mail = $string === 'true'? true: false;
EDIT: the above code is intended for clarity of understanding. In actual use the following code may be more appropriate:
$test_mode_mail = ($string === 'true');
or maybe use of the filter_var function may cover more boolea...